1.2.1 This reference paper provides health authorities with a guide to the EIA Directive to assist in navigating the EIA process. It provides principles and good practice for proportionately addressing health in EIA. Whilst this reference paper is structured around compliance with the EIA Directive, the principles and approaches have broad application to health in impact assessment globally. 1.2.2 This reference paper focusses on the process of EIA according to the EIA Directive. It contributes towards a consistent coverage of human health within an EIA and will assist health authorities in reviewing the coverage of health in EIA. It will assist other parties in addressing health in EIA.